/* eslint-disable max-len */
import ruleTrigger from "./ruleTrigger";

let confGlobal;
let someSpanIsNot24;

export function dialogWrapper(str) {
  return `<el-dialog v-bind="$attrs" v-on="$listeners" @open="onOpen" @close="onClose" title="Dialog Titile">
    ${str}
    <div slot="footer">
      <el-button @click="close">取消</el-button>
      <el-button type="primary" @click="handelConfirm">确定</el-button>
    </div>
  </el-dialog>`;
}

export function vueTemplate(str) {
  return `<template>
    <div>
      ${str}
    </div>
  </template>`;
}

export function vueScript(str) {
  return `<script>
    ${str}
  </script>`;
}

export function cssStyle(cssStr) {
  return `<style>
    ${cssStr}
  </style>`;
}

function buildFormTemplate(scheme, child, type) {
  let labelPosition = "";
  if (scheme.labelPosition !== "right") {
    labelPosition = `label-position="${scheme.labelPosition}"`;
  }
  const disabled = scheme.disabled ? `:disabled="${scheme.disabled}"` : "";
  let str = `<el-form ref="${scheme.formRef}" :model="${
    scheme.formModel
  }" :rules="${scheme.formRules}" size="${
    scheme.size
  }" ${disabled} label-width="${scheme.labelWidth}px" ${labelPosition}>
      ${child}
      ${buildFromBtns(scheme, type)}
    </el-form>`;
  if (someSpanIsNot24) {
    str = `<el-row :gutter="${scheme.gutter}">
        ${str}
      </el-row>`;
  }
  return str;
}

function buildFromBtns(scheme, type) {
  let str = "";
  if (scheme.formBtns && type === "file") {
    str = `<el-form-item size="large">
          <el-button type="primary" @click="submitForm">提交</el-button>
          <el-button @click="resetForm">重置</el-button>
        </el-form-item>`;
    if (someSpanIsNot24) {
      str = `<el-col :span="24">
          ${str}
        </el-col>`;
    }
  }
  return str;
}

// span不为24的用el-col包裹
function colWrapper(scheme, str) {
  if (someSpanIsNot24 || scheme.__config__.span !== 24) {
    return `<el-col :span="${scheme.__config__.span}">
      ${str}
    </el-col>`;
  }
  return str;
}

const layouts = {
  colFormItem(scheme) {
    const config = scheme.__config__;
    let labelWidth = "";
    let label = `label="${config.label}"`;
    if (config.labelWidth && config.labelWidth !== confGlobal.labelWidth) {
      labelWidth = `label-width="${config.labelWidth}px"`;
    }
    if (config.showLabel === false) {
      labelWidth = 'label-width="0"';
      label = "";
    }
    const required =
      !ruleTrigger[config.tag] && config.required ? "required" : "";
    const tagDom = tags[config.tag] ? tags[config.tag](scheme) : null;
    let str = `<el-form-item ${labelWidth} ${label} prop="${scheme.__vModel__}" ${required}>
        ${tagDom}
      </el-form-item>`;
    str = colWrapper(scheme, str);
    return str;
  },
  rowFormItem(scheme) {
    const config = scheme.__config__;
    const type = scheme.type === "default" ? "" : `type="${scheme.type}"`;
    const justify =
      scheme.type === "default" ? "" : `justify="${scheme.justify}"`;
    const align = scheme.type === "default" ? "" : `align="${scheme.align}"`;
    const gutter = scheme.gutter ? `:gutter="${scheme.gutter}"` : "";
    const children = config.children.map((el) =>
      layouts[el.__config__.layout](el)
    );
    let str = `<el-row ${type} ${justify} ${align} ${gutter}>
      ${children.join("\n")}
    </el-row>`;
    str = colWrapper(scheme, str);
    return str;
  },
};

const tags = {
  "el-button": (el) => {
    const { tag, disabled } = attrBuilder(el);
    const type = el.type ? `type="${el.type}"` : "";
    const icon = el.icon ? `icon="${el.icon}"` : "";
    const round = el.round ? "round" : "";
    const size = el.size ? `size="${el.size}"` : "";
    const plain = el.plain ? "plain" : "";
    const circle = el.circle ? "circle" : "";
    let child = buildElButtonChild(el);

    if (child) child = `\n${child}\n`; // 换行
    return `<${tag} ${type} ${icon} ${round} ${size} ${plain} ${disabled} ${circle}>${child}</${tag}>`;
  },
  "el-input": (el) => {
    const { tag, disabled, vModel, clearable, placeholder, width } =
      attrBuilder(el);
    const maxlength = el.maxlength ? `:maxlength="${el.maxlength}"` : "";
    const showWordLimit = el["show-word-limit"] ? "show-word-limit" : "";
    const readonly = el.readonly ? "readonly" : "";
    const prefixIcon = el["prefix-icon"]
      ? `prefix-icon='${el["prefix-icon"]}'`
      : "";
    const suffixIcon = el["suffix-icon"]
      ? `suffix-icon='${el["suffix-icon"]}'`
      : "";
    const showPassword = el["show-password"] ? "show-password" : "";
    const type = el.type ? `type="${el.type}"` : "";
    const autosize =
      el.autosize && el.autosize.minRows
        ? `:autosize="{minRows: ${el.autosize.minRows}, maxRows: ${el.autosize.maxRows}}"`
        : "";
    let child = buildElInputChild(el);

    if (child) child = `\n${child}\n`; // 换行
    return `<${tag} ${vModel} ${type} ${placeholder} ${maxlength} ${showWordLimit} ${readonly} ${disabled} ${clearable} ${prefixIcon} ${suffixIcon} ${showPassword} ${autosize} ${width}>${child}</${tag}>`;
  },
  "el-input-number": (el) => {
    const { tag, disabled, vModel, placeholder } = attrBuilder(el);
    const controlsPosition = el["controls-position"]
      ? `controls-position='${el["controls-position"]}'`
      : "";
    const min = el.min ? `:min='${el.min}'` : "";
    const max = el.max ? `:max='${el.max}'` : "";
    const step = el.step ? `:step='${el.step}'` : "";
    const stepStrictly = el["step-strictly"] ? "step-strictly" : "";
    const precision = el.precision ? `:precision='${el.precision}'` : "";

    return `<${tag} ${vModel} ${placeholder} ${step} ${stepStrictly} ${precision} ${controlsPosition} ${min} ${max} ${disabled}></${tag}>`;
  },
  "el-select": (el) => {
    const { tag, disabled, vModel, clearable, placeholder, width } =
      attrBuilder(el);
    const filterable = el.filterable ? "filterable" : "";
    const multiple = el.multiple ? "multiple" : "";
    let child = buildElSelectChild(el);

    if (child) child = `\n${child}\n`; // 换行
    return `<${tag} ${vModel} ${placeholder} ${disabled} ${multiple} ${filterable} ${clearable} ${width}>${child}</${tag}>`;
  },
  "el-radio-group": (el) => {
    const { tag, disabled, vModel } = attrBuilder(el);
    const size = `size="${el.size}"`;
    let child = buildElRadioGroupChild(el);

    if (child) child = `\n${child}\n`; // 换行
    return `<${tag} ${vModel} ${size} ${disabled}>${child}</${tag}>`;
  },
  "el-checkbox-group": (el) => {
    const { tag, disabled, vModel } = attrBuilder(el);
    const size = `size="${el.size}"`;
    const min = el.min ? `:min="${el.min}"` : "";
    const max = el.max ? `:max="${el.max}"` : "";
    let child = buildElCheckboxGroupChild(el);

    if (child) child = `\n${child}\n`; // 换行
    return `<${tag} ${vModel} ${min} ${max} ${size} ${disabled}>${child}</${tag}>`;
  },
  "el-switch": (el) => {
    const { tag, disabled, vModel } = attrBuilder(el);
    const activeText = el["active-text"]
      ? `active-text="${el["active-text"]}"`
      : "";
    const inactiveText = el["inactive-text"]
      ? `inactive-text="${el["inactive-text"]}"`
      : "";
    const activeColor = el["active-color"]
      ? `active-color="${el["active-color"]}"`
      : "";
    const inactiveColor = el["inactive-color"]
      ? `inactive-color="${el["inactive-color"]}"`
      : "";
    const activeValue =
      el["active-value"] !== true
        ? `:active-value='${JSON.stringify(el["active-value"])}'`
        : "";
    const inactiveValue =
      el["inactive-value"] !== false
        ? `:inactive-value='${JSON.stringify(el["inactive-value"])}'`
        : "";

    return `<${tag} ${vModel} ${activeText} ${inactiveText} ${activeColor} ${inactiveColor} ${activeValue} ${inactiveValue} ${disabled}></${tag}>`;
  },
  "el-cascader": (el) => {
    const { tag, disabled, vModel, clearable, placeholder, width } =
      attrBuilder(el);
    const options = el.options ? `:options="${el.__vModel__}Options"` : "";
    const props = el.props ? `:props="${el.__vModel__}Props"` : "";
    const showAllLevels = el["show-all-levels"]
      ? ""
      : ':show-all-levels="false"';
    const filterable = el.filterable ? "filterable" : "";
    const separator = el.separator === "/" ? "" : `separator="${el.separator}"`;

    return `<${tag} ${vModel} ${options} ${props} ${width} ${showAllLevels} ${placeholder} ${separator} ${filterable} ${clearable} ${disabled}></${tag}>`;
  },
  "el-slider": (el) => {
    const { tag, disabled, vModel } = attrBuilder(el);
    const min = el.min ? `:min='${el.min}'` : "";
    const max = el.max ? `:max='${el.max}'` : "";
    const step = el.step ? `:step='${el.step}'` : "";
    const range = el.range ? "range" : "";
    const showStops = el["show-stops"]
      ? `:show-stops="${el["show-stops"]}"`
      : "";

    return `<${tag} ${min} ${max} ${step} ${vModel} ${range} ${showStops} ${disabled}></${tag}>`;
  },
  "el-time-picker": (el) => {
    const { tag, disabled, vModel, clearable, placeholder, width } =
      attrBuilder(el);
    const startPlaceholder = el["start-placeholder"]
      ? `start-placeholder="${el["start-placeholder"]}"`
      : "";
    const endPlaceholder = el["end-placeholder"]
      ? `end-placeholder="${el["end-placeholder"]}"`
      : "";
    const rangeSeparator = el["range-separator"]
      ? `range-separator="${el["range-separator"]}"`
      : "";
    const isRange = el["is-range"] ? "is-range" : "";
    const format = el.format ? `format="${el.format}"` : "";
    const valueFormat = el["value-format"]
      ? `value-format="${el["value-format"]}"`
      : "";
    const pickerOptions = el["picker-options"]
      ? `:picker-options='${JSON.stringify(el["picker-options"])}'`
      : "";

    return `<${tag} ${vModel} ${isRange} ${format} ${valueFormat} ${pickerOptions} ${width} ${placeholder} ${startPlaceholder} ${endPlaceholder} ${rangeSeparator} ${clearable} ${disabled}></${tag}>`;
  },
  "el-date-picker": (el) => {
    const { tag, disabled, vModel, clearable, placeholder, width } =
      attrBuilder(el);
    const startPlaceholder = el["start-placeholder"]
      ? `start-placeholder="${el["start-placeholder"]}"`
      : "";
    const endPlaceholder = el["end-placeholder"]
      ? `end-placeholder="${el["end-placeholder"]}"`
      : "";
    const rangeSeparator = el["range-separator"]
      ? `range-separator="${el["range-separator"]}"`
      : "";
    const format = el.format ? `format="${el.format}"` : "";
    const valueFormat = el["value-format"]
      ? `value-format="${el["value-format"]}"`
      : "";
    const type = el.type === "date" ? "" : `type="${el.type}"`;
    const readonly = el.readonly ? "readonly" : "";

    return `<${tag} ${type} ${vModel} ${format} ${valueFormat} ${width} ${placeholder} ${startPlaceholder} ${endPlaceholder} ${rangeSeparator} ${clearable} ${readonly} ${disabled}></${tag}>`;
  },
  "el-rate": (el) => {
    const { tag, disabled, vModel } = attrBuilder(el);
    const max = el.max ? `:max='${el.max}'` : "";
    const allowHalf = el["allow-half"] ? "allow-half" : "";
    const showText = el["show-text"] ? "show-text" : "";
    const showScore = el["show-score"] ? "show-score" : "";

    return `<${tag} ${vModel} ${max} ${allowHalf} ${showText} ${showScore} ${disabled}></${tag}>`;
  },
  "el-color-picker": (el) => {
    const { tag, disabled, vModel } = attrBuilder(el);
    const size = `size="${el.size}"`;
    const showAlpha = el["show-alpha"] ? "show-alpha" : "";
    const colorFormat = el["color-format"]
      ? `color-format="${el["color-format"]}"`
      : "";

    return `<${tag} ${vModel} ${size} ${showAlpha} ${colorFormat} ${disabled}></${tag}>`;
  },
  "el-upload": (el) => {
    const { tag } = el.__config__;
    const disabled = el.disabled ? ":disabled='true'" : "";
    const action = el.action ? `:action="${el.__vModel__}Action"` : "";
    const multiple = el.multiple ? "multiple" : "";
    const listType =
      el["list-type"] !== "text" ? `list-type="${el["list-type"]}"` : "";
    const accept = el.accept ? `accept="${el.accept}"` : "";
    const name = el.name !== "file" ? `name="${el.name}"` : "";
    const autoUpload =
      el["auto-upload"] === false ? ':auto-upload="false"' : "";
    const beforeUpload = `:before-upload="${el.__vModel__}BeforeUpload"`;
    const fileList = `:file-list="${el.__vModel__}fileList"`;
    const ref = `ref="${el.__vModel__}"`;
    let child = buildElUploadChild(el);

    if (child) child = `\n${child}\n`; // 换行
    return `<${tag} ${ref} ${fileList} ${action} ${autoUpload} ${multiple} ${beforeUpload} ${listType} ${accept} ${name} ${disabled}>${child}</${tag}>`;
  },
  tinymce: (el) => {
    const { tag, vModel, placeholder } = attrBuilder(el);
    const height = el.height ? `:height="${el.height}"` : "";
    const branding = el.branding ? `:branding="${el.branding}"` : "";
    return `<${tag} ${vModel} ${placeholder} ${height} ${branding}></${tag}>`;
  },
  Text: (el) => {
    const { tag } = attrBuilder(el);
    let child = "",
      textStyle = "";
    for (const key in el.textStyle) {
      const value = el.textStyle[key];
      child += "'" + key + "': '" + value + "',";
    }
    textStyle = `:textStyle="{${child}}"`;
    const lineHeight = `:lineHeight="${el.lineHeight}"`;
    const fontSize = `:fontSize="${el.fontSize}"`;
    // const vModel = `v-model="'${el.__config__.defaultValue}'"`
    const vModel = `value="${el.__config__.defaultValue}"`;
    return `<${tag} ${vModel} ${textStyle} ${lineHeight} ${fontSize}></${tag}>`;
  },
  Amount: function (el) {
    const tag = this["el-input-number"](el);
    const showChinese = el.showChinese
      ? `:showChinese='${el.showChinese}'`
      : "";
    return addPropToTag(tag, showChinese);
  },
  "el-divider": function (el) {
    const { tag } = attrBuilder(el);
    const contentPosition = `content-position="${el["content-position"]}"`;
    const child = el.__slot__.default;
    return `<${tag} ${contentPosition}>${child}</${tag}>`;
  },
  UploadImg: function (el) {
    const { tag, vModel, disabled } = attrBuilder(el);
    const accept = `accept="${el.accept}"`;
    const fileSize = `:fileSize="${el.fileSize}"`;
    const limit = `:limit="${el.limit}"`;
    const showTip = `:showTip="${el.showTip}"`;
    const sizeUnit = `sizeUnit="${el.sizeUnit}"`;
    return `<${tag} ${vModel} ${accept} ${fileSize} ${limit} ${showTip} ${sizeUnit} ${disabled}></${tag}>`;
  },
  UploadFz: function (el) {
    const tag = this["UploadImg"](el);
    const buttonText = `buttonText="${el.buttonText}"`;
    return addPropToTag(tag, buttonText);
  },
  quill: function (el) {
    const { tag, vModel, placeholder } = attrBuilder(el);
    return `<${tag} ${vModel} ${placeholder}></${tag}>`;
  },
  "com-select": function (el) {
    const { tag, vModel, placeholder, disabled } = attrBuilder(el);
    return `<${tag} ${vModel} ${placeholder} ${disabled}></${tag}>`;
  },
  "dep-select": function (el) {
    const { tag, vModel, placeholder, disabled } = attrBuilder(el);
    return `<${tag} ${vModel} ${placeholder} ${disabled}></${tag}>`;
  },
  "pos-select": function (el) {
    const { tag, vModel, placeholder, disabled } = attrBuilder(el);
    const multiple = `:multiple="${el.multiple}"`;
    return `<${tag} ${vModel} ${placeholder} ${multiple} ${disabled}></${tag}>`;
  },
  "user-select": function (el) {
    const { tag, vModel, placeholder, disabled } = attrBuilder(el);
    const multiple = `:multiple="${el.multiple}"`;
    return `<${tag} ${vModel} ${placeholder} ${multiple} ${disabled}></${tag}>`;
  },
  "dic-select": function (el) {
    const { tag, vModel, placeholder, disabled } = attrBuilder(el);
    return `<${tag} ${vModel} ${placeholder} ${disabled}></${tag}>`;
  },
  Address: function (el) {
    const { tag, vModel, placeholder, disabled } = attrBuilder(el);
    const level = `:multiple="${el.level}"`;
    return `<${tag} ${vModel} ${placeholder} ${level} ${disabled}></${tag}>`;
  },
};
const addPropToTag = (tag, ...props) => {
  const insetIndex = tag.search(/>\s*<\//);

  if (insetIndex > -1) {
    return tag.slice(0, insetIndex) + props.join(" ") + tag.slice(insetIndex);
  } else {
    return tag;
  }
};

function attrBuilder(el) {
  return {
    tag: el.__config__.tag,
    vModel: `v-model="${confGlobal.formModel}.${el.__vModel__}"`,
    clearable: el.clearable ? "clearable" : "",
    placeholder: el.placeholder ? `placeholder="${el.placeholder}"` : "",
    width: el.style && el.style.width ? ":style=\"{width: '100%'}\"" : "",
    disabled: el.disabled ? ":disabled='true'" : "",
  };
}

// el-buttin 子级
function buildElButtonChild(scheme) {
  const children = [];
  const slot = scheme.__slot__ || {};
  if (slot.default) {
    children.push(slot.default);
  }
  return children.join("\n");
}

// el-input 子级
function buildElInputChild(scheme) {
  const children = [];
  const slot = scheme.__slot__;
  if (slot && slot.prepend) {
    children.push(`<template slot="prepend">${slot.prepend}</template>`);
  }
  if (slot && slot.append) {
    children.push(`<template slot="append">${slot.append}</template>`);
  }
  return children.join("\n");
}

// el-select 子级
function buildElSelectChild(scheme) {
  const children = [];
  const slot = scheme.__slot__;
  if (slot && slot.options && slot.options.length) {
    children.push(
      `<el-option v-for="(item, index) in ${scheme.__vModel__}Options" :key="index" :label="item.label" :value="item.value" :disabled="item.disabled"></el-option>`
    );
  }
  return children.join("\n");
}

// el-radio-group 子级
function buildElRadioGroupChild(scheme) {
  const children = [];
  const slot = scheme.__slot__;
  const config = scheme.__config__;
  if (slot && slot.options && slot.options.length) {
    const tag = config.optionType === "button" ? "el-radio-button" : "el-radio";
    const border = config.border ? "border" : "";
    children.push(
      `<${tag} v-for="(item, index) in ${scheme.__vModel__}Options" :key="index" :label="item.value" :disabled="item.disabled" ${border}>{{item.label}}</${tag}>`
    );
  }
  return children.join("\n");
}

// el-checkbox-group 子级
function buildElCheckboxGroupChild(scheme) {
  const children = [];
  const slot = scheme.__slot__;
  const config = scheme.__config__;
  if (slot && slot.options && slot.options.length) {
    const tag =
      config.optionType === "button" ? "el-checkbox-button" : "el-checkbox";
    const border = config.border ? "border" : "";
    children.push(
      `<${tag} v-for="(item, index) in ${scheme.__vModel__}Options" :key="index" :label="item.value" :disabled="item.disabled" ${border}>{{item.label}}</${tag}>`
    );
  }
  return children.join("\n");
}

// el-upload 子级
function buildElUploadChild(scheme) {
  const list = [];
  const config = scheme.__config__;
  if (scheme["list-type"] === "picture-card")
    list.push('<i class="el-icon-plus"></i>');
  else
    list.push(
      `<el-button size="small" type="primary" icon="el-icon-upload">${config.buttonText}</el-button>`
    );
  if (config.showTip)
    list.push(
      `<div slot="tip" class="el-upload__tip">只能上传不超过 ${config.fileSize}${config.sizeUnit} 的${scheme.accept}文件</div>`
    );
  return list.join("\n");
}

/**
 * 组装html代码。【入口函数】
 * @param {Object} formConfig 整个表单配置
 * @param {String} type 生成类型，文件或弹窗等
 */
export function makeUpHtml(formConfig, type) {
  const htmlList = [];
  confGlobal = formConfig;
  // 判断布局是否都沾满了24个栅格，以备后续简化代码结构
  someSpanIsNot24 = formConfig.fields.some(
    (item) => item.__config__.span !== 24
  );
  // 遍历渲染每个组件成html
  formConfig.fields.forEach((el) => {
    htmlList.push(layouts[el.__config__.layout](el));
  });
  const htmlStr = htmlList.join("\n");
  // 将组件代码放进form标签
  let temp = buildFormTemplate(formConfig, htmlStr, type);
  // dialog标签包裹代码
  if (type === "dialog") {
    temp = dialogWrapper(temp);
  }
  confGlobal = null;
  return temp;
}
